The Net Advance of Physics:

Resources for Frayn's Copenhagen: Act II: Heisenberg's journey

Heisenberg describes in Act II his bicycle journey from Haigerloch to Bavaria after the end of WWII to see his family before the Allied soldiers captured him. Like the Magi, he traveled three days and three nights; he knew that he, rather than the people he sought, was a target and moved stealthily to avoid detection. The places he traversed: